IST8310 datasheet(9)

IST 8310 datasheet 完整版

IST8310

IST8310 Datasheet, Version 1.2

9

3.2 Interrupt Function

Interrupt function is used when there is a huge external magnetic field in the surrounding. When the absolute sum of measured 3-axis output value exceeds 1600 uT, the INT flag is activated. The INT flag can be found in STA T2 register.

3.3 DRDY Function

DRDY function is used when the output data is updated. The DRDY pin is used to monitor the data ready output. DRDY is changed to low after reading data from the output register.

3.4 IST8310 Read Process

(1) Read STAT1 register:

‐Polling STAT1 register bit 0

‐DRDY: shows if the data is ready or not

0: no data ready

1: data ready

‐DOR: shows if any data has been skipped before the current data

0: no skipped data

1: data skipped.

(2) Read Measurement Data:

Read Register 0x03h~0x08h for X, Y and Z axis data. When data reading starts, DRDY bit and DOR bit turn t o “0”.